Resin composite having excellent soundproofing and mechanical properties

Abstract

Disclosed are a resin composite having excellent soundproofing and mechanical properties, and a molded product including the same. The resin composite may include a resin composition, porous particles and a reinforcing material, and the molded product including the same include no volatile organic compounds (VOCs). As consequence, displeasure caused by generation of the VOCs and exhaust of toxic gas during combustion may be reduced thereby being environmentally friendly. Further, the resin composite and the molded product including the same demonstrate sufficient mechanical strength and may thus be directly applied to a housing or the like of an apparatus which generates noise without introduction of any additional soundproofing material. For example, the resin composite and the molded product may include a specific content of the porous particles having pores having a specific size to secure an appropriate volume fraction and may thus efficiently and economically block noise transmission.

What is claimed is: 
     
       1. A resin composite comprising:
 a resin composition comprising a thermoplastic resin, a thermosetting resin or a combination thereof; 
 porous particles; and 
 a reinforcing material; 
 wherein the porous particles have a content of about 5 to 40 vol % with respect to a total volume of the resin composite regarded as 100 vol %, wherein the porous particles comprise one or more selected from the group consisting of porous aerogel granules, porous calcium silicate granules, porous active catalytic ceramic granules, porous zeolite granules, and porous active carbon granules. 
 
     
     
       2. The resin composite of  claim 1 , further comprising an additive. 
     
     
       3. The resin composite of  claim 2 , comprising:
 an amount of about 58.6 to 99.93 wt % of the resin composition; 
 an amount of greater than 0 to about 40.0 wt % of the reinforcing fiber; and 
 an amount of greater than 0 to about 1.0 wt % of the additive, 
 all the wt % are based on the total weight of the resin composite. 
 
     
     
       4. The resin composite of  claim 1 , wherein the thermoplastic resin comprises one or more selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyphthalamide (PPA), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycarbonate (PC), polyphenylene sulfide (PPS), polysulfone (PSU), polyimide, polyethersulfone, polyether ether ketone, polyoxymethylene, and polymethyl methacrylate. 
     
     
       5. The resin composite of  claim 1 , wherein the thermosetting resin comprises one or more selected from the group consisting of epoxy, phenol, and unsaturated polyester. 
     
     
       6. The resin composite of  claim 1 , wherein pores in the porous particles have a size of about 2 to 50 nm. 
     
     
       7. The resin composite of  claim 1 , wherein the porous particles have a specific gravity of about 0.013 to 0.017 g/cm 3 . 
     
     
       8. The resin composite of  claim 1 , wherein the porous particles are coated with polyurethane, polyurea or a combination thereof. 
     
     
       9. The resin composite of  claim 1 , wherein the reinforcing material comprises a fiber reinforcing material, an inorganic reinforcing material or a combination thereof. 
     
     
       10. The resin composite of  claim 9 , wherein the fiber reinforcing material comprises one or more selected from the group consisting of a glass fiber reinforcing material, a carbon fiber reinforcing material, and a basalt fiber reinforcing material. 
     
     
       11. The resin composite of  claim 9 , wherein the inorganic reinforcing material comprises calcium carbonate, whisker or a combination thereof. 
     
     
       12. The resin composite of  claim 2 , wherein the additive comprises one or more selected from the group consisting of a plasticizer, a thermal stabilizer, an antioxidant, and a lubricant. 
     
     
       13. A molded product comprising the resin composite of  claim 1 . 
     
     
       14. The molded product of  claim 13 , wherein the molded product has a transmission loss (TL) of about 40 to 45 dB and a tensile strength of about 60 to 190 MPa. 
     
     
       15. A vehicle part comprising the molded product of  claim 13 . 
     
     
       16. The vehicle part of  claim 15 , wherein the vehicle part is an engine cover, an engine room bulkhead, a motor housing, a weather strip, a muffler or combinations thereof. 
     
     
       17. A vehicle comprising the molded product of  claim 13 .